Tuberculosis has been brought under control in much of the world, thanks to prevention practices and powerful antibiotics. But in poor nations like Peru, the disease still kills hundreds of babies and children — and new drug-resistant cases threaten an even bigger resurgence.

Tifanny Rodriguez Esquivel, 7, is recovering from tuberculosis. Because of her condition, she remains at home and has missed school for more than six months. Tifanny's family has limited income and since she became ill, the family has had to move into a smaller room in her grandmother's house.

Tuberculosis has been brought under control in much of the world, thanks to prevention practices and powerful antibiotics. But in poor nations like Peru, the disease still kills hundreds of babies and children — and new drug-resistant cases threaten an even bigger resurgence.